Ignition system



Aug. 27, 1935. A. J. REES 2,012,581

IGNITION SYSTEM Filed June 26, 1955 x.- The present: nventionv relates broadlyrtoyignitionzsystems for. internal combustion engines and :more specifically to ignition systems having two sources or. electrical energy; such as agenerator and a .battery=xembodied -'ina [single systemito .aproducel a currient mme. spark. circuit. In these v1 systems the Aigenerator energizes, in .7 connection with a spark l-coil system; the engine during nor- -mal oper'ation; .whereas, the 1 battery ..;.'.together.

with the spark coil-system furnishes the energy to the spark plugs of the engine during starting operations and when thehgeneratoris rotating slowly and producing less current than :the cur- -r'entj: supplied by the battery; M The spark coil system in these i circuits' commonly includes an yin-'- ductionL- coil, a timer, and a mechanica1 vinter- 'rupte-r. The' primary' winding ofthe induction coil, the timerand the interrupter are connected to the so called'low Voltage current circuit,zwhich*' is directly connected to" the battery 5 and generator; whereas 1 the {distributor :is connected to -the high-voltage branch of therignitiondcircuitwhich includes .5 the. secondary winding of 'the' coil; I'h e highs voltage sparks produced by! ignition. systems of the. type" .justdescribed .-.are causedby the momentarily inducedcurrentlin. the secondary winding. of .thedinduc- =tion-coiliupon breaking..-,of the primary circuit 'by the interrupter; .Thenbreakingk of the; primary circuit creates self-induction andrreactancezin "the .:interruptedz. primary .windingi hus causing flashing ,or sparking; at .the interrupted. contacts of the interrupter. As this flashing is hardaon I lthe contactsvof the-interrupter, spark arre'sting means, such as a condenser, are connected across .thecqntac so the nt r u er rabsq p iq of the. extra 011 s 1 +m e u rent-.1 Th exce iv .1158, ointhese'sparkl arresting; means often causes leakagewand break down; ofthesarnain addition -to the burning ,of thei interrupter contacts ietc.

.1: Itfisthe primary ObjCCtzOf .the-presentsinvenl tionto :provide! an arrangement of ficircuitscand x'apparatus, ;.whereby the engine can be. easily -star-ted.:.even though the contacts ofathei interrupter: are :in: poor condition ,r,0m (burning or a pitting. This desideratum lacco'rdingcsto rthei g in- "ventiOn, is obtained by 'connectingan? electricallyresponsive vibrator--unit'withthef ignition circuit.

the: ignition icircuit and so related thereto fthat the mechanical :interrupter 1 merely .:timesv the action-Jofithe vibrator," whereasithe: breakingxiof --the current flowing in said :low yo1ta'ge.i;branch the circuit breaking action of ,the vibrator .-u nit in uwithjthe vibrator unit. v nnother object of. theinventionis to provide a ,of the-typereierred to.

vibrator-unit.

Thejcon'tactsof the'xnechanical circuitibreaker or interrupter-JmereIy efiect -syim ron ization of withrespect tothe breaking action ofjthe icon tacts or the mechanical interrupter and thus efiect proper timingof the ignition circuit operatvib a o u t .o co pa d vs m etc n tmction, adapted to; be connected; toignitioncircuits Theioregoingyand further objects gof the ;in-i vention willmorereadily be understood from the dollowingdescription of my invention, as illustrated in;the;accompanying drawing, in =which2 Y i.-.Figure '1 shows in diagram my inventionas ,employedin connection with asingle wire ignition system for a l six-cylinder motor; :the diagram showing .agenerator and. a battery .as the source :ofenergyy 1,

1 Figures 2, 3 andshows-ia vibratory low voltage branch. circuit 4' of. the..ignitiorrciracuit by an ig'nitionswitch5. Low voltagebranch circuit 4 includes Eprimary coil E6. of ignition coil 1, an ;,e1ectrically.responsive interrupter or,vi- 1 brator' mechanis'm arand' the common rotary in- V 'terrupter 9, which latter is grounded-atJflfto' close thecycle of'the circuit-with groundsl l and 54,4) I2 of battery 2f andfglenerato'r 3 respectively. 'Ihe 'nor'mally closed-contacts I4' and limit-vibrator -mechanism"'8; are connected across by -a condenser an th w ite sare 1. di r int rr pt ar ig o ne 'da r by. a "c denser 19; to oyercome flashing atthesecontacts caused by .;se1f ,induc tion. and "reactanc'e durinjg f interruption or breaking offlojw yoltag'e circuit]. ,v The electrically resp sive interrupter or brator mechanis'm'fl isactuated by anel I m net ma aw the; w'i ie bre h c uit a l e. tan lbandf grm h 1 ..throush a swi ch ada ted to c l t e-HI? :eration ofgithe electroemagnetgfls. as

allel with said normal circuit interrupter the coil of the electromagnetically operated emergency vibrator, and switching means controlling the energizing of the coil of said emergency vibrator, said switching means controlling individual and joint breaking of said low voltage current circuit by said normal circuit interrupter and said emergency vibrator, and said ignition system synchronizing the circuit breaking action of said emergency vibrator with the action of said normal interrupter.

' v ADAM J REES. 

